Answer:
k = 3
Step-by-step explanation:
Expand the left side and compare the coefficients of like terms on both sides.
(2x - 1)(kx + 1) ← expand using FOIL
= 2kx² + 2x - kx - 1
Compare the coefficients of the x² term on both sides
2k = 6 ( divide both sides by 2 )
k = 3
Answer: $350+$85w greater than or equal to $715
Explanation:
$350 = already saved up money
$85w = additional money each week (we don’t know how many weeks we need to save up in order to reach our goal, so the number of weeks is unknown)
The sign is greater than or less than because you either have to reach the exact total of $715 or more than that.
Now, solve.
$350+$85w greater than or equal to $715
$85w greater than or less than $365
w greater than or less than 4
Answer:
akjshlfjkhdlakjsdhlkjlfjhlkjhdljalsjkhdlfkjhlkjasdlkjlkjhlkjhlkjalkjhlakdffaklkj;alkjfakdj;lkj;lasdkfj;lkjfdlskj;lkj;asdljksdjkjkdjs;kjsdakjjkjkdsjkjkjkjkdjkjkjkjkjdkjkjjkdjkjdj jfjgfjfjfjfjfjfjffjfjfjjjfjfjfjj fj
Step-by-step explanation:
The number of viruses was 4000 times greater than number of protozoa.
Step-by-step explanation:
Given,
Number of protozoa = ![5*10^5](https://tex.z-dn.net/?f=5%2A10%5E5)
Number of viruses = ![2*10^9](https://tex.z-dn.net/?f=2%2A10%5E9)
Let,
x be the number of times number of viruses is greater than number of protozoa.
Number of viruses = Number of time * Number of protozoa
![2*10^9=(5*10^5)x](https://tex.z-dn.net/?f=2%2A10%5E9%3D%285%2A10%5E5%29x)
Dividing both sides by ![5*10^5](https://tex.z-dn.net/?f=5%2A10%5E5)
![\frac{2*10^9}{5*10^5}=\frac{(5*10^5)x}{5*10^5}\\\\4*10^3= x\\x=4*10^3 \\x=4000](https://tex.z-dn.net/?f=%5Cfrac%7B2%2A10%5E9%7D%7B5%2A10%5E5%7D%3D%5Cfrac%7B%285%2A10%5E5%29x%7D%7B5%2A10%5E5%7D%5C%5C%5C%5C4%2A10%5E3%3D%20x%5C%5Cx%3D4%2A10%5E3%20%5C%5Cx%3D4000)
The number of viruses was 4000 times greater than number of protozoa.
Keywords: division, scientific notation
Learn more about division at:
#LearnwithBrainly
Answer:
fruit cost less by the
Step-by-step explanation:
one pound of fruit cost 3.30 and peanuts cost 3.50 per pound